target/linux/brcm2708/patches-4.1/0062-Add-Device-Tree-support-for-RPi-DAC.patch

   1 From 53a42fe2c62f1a21329c737321f59e0ab97ac655 Mon Sep 17 00:00:00 2001
   2 From: Clive Messer <clive.m.messer@gmail.com>
   3 Date: Thu, 2 Apr 2015 12:22:55 +0100
   4 Subject: [PATCH 062/222] Add Device Tree support for RPi-DAC.
   5
   6 ---
   7  sound/soc/bcm/rpi-dac.c     | 21 +++++++++++++++++++++
   8  sound/soc/codecs/pcm1794a.c |  7 +++++++
   9  2 files changed, 28 insertions(+)
  10
  11 --- a/sound/soc/bcm/rpi-dac.c
  12 +++ b/sound/soc/bcm/rpi-dac.c
  13 @@ -69,6 +69,20 @@ static int snd_rpi_rpi_dac_probe(struct
  14         int ret = 0;
  15
  16         snd_rpi_rpi_dac.dev = &pdev->dev;
  17 +
  18 +       if (pdev->dev.of_node) {
  19 +               struct device_node *i2s_node;
  20 +               struct snd_soc_dai_link *dai = &snd_rpi_rpi_dac_dai[0];
  21 +               i2s_node = of_parse_phandle(pdev->dev.of_node, "i2s-controller", 0);
  22 +
  23 +               if (i2s_node) {
  24 +                       dai->cpu_dai_name = NULL;
  25 +                       dai->cpu_of_node = i2s_node;
  26 +                       dai->platform_name = NULL;
  27 +                       dai->platform_of_node = i2s_node;
  28 +               }
  29 +       }
  30 +
  31         ret = snd_soc_register_card(&snd_rpi_rpi_dac);
  32         if (ret)
  33                 dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
  34 @@ -81,10 +95,17 @@ static int snd_rpi_rpi_dac_remove(struct
  35         return snd_soc_unregister_card(&snd_rpi_rpi_dac);
  36  }
  37
  38 +static const struct of_device_id snd_rpi_rpi_dac_of_match[] = {
  39 +       { .compatible = "rpi,rpi-dac", },
  40 +       {},
  41 +};
  42 +MODULE_DEVICE_TABLE(of, snd_rpi_rpi_dac_of_match);
  43 +
  44  static struct platform_driver snd_rpi_rpi_dac_driver = {
  45          .driver = {
  46                  .name   = "snd-rpi-dac",
  47                  .owner  = THIS_MODULE,
  48 +                .of_match_table = snd_rpi_rpi_dac_of_match,
  49          },
  50          .probe          = snd_rpi_rpi_dac_probe,
  51          .remove         = snd_rpi_rpi_dac_remove,
  52 --- a/sound/soc/codecs/pcm1794a.c
  53 +++ b/sound/soc/codecs/pcm1794a.c
  54 @@ -46,12 +46,19 @@ static int pcm1794a_remove(struct platfo
  55         return 0;
  56  }
  57
  58 +static const struct of_device_id pcm1794a_of_match[] = {
  59 +       { .compatible = "ti,pcm1794a", },
  60 +       { }
  61 +};
  62 +MODULE_DEVICE_TABLE(of, pcm1794a_of_match);
  63 +
  64  static struct platform_driver pcm1794a_codec_driver = {
  65         .probe          = pcm1794a_probe,
  66         .remove         = pcm1794a_remove,
  67         .driver         = {
  68                 .name   = "pcm1794a-codec",
  69                 .owner  = THIS_MODULE,
  70 +               .of_match_table = of_match_ptr(pcm1794a_of_match),
  71         },
  72  };
  73